Knot-actuated stop for knitting-machines.



Patnte'd` Sept. 4, |900.

W. GREEN.

KNDT ACTUATED STOP FOB KNITTING MAGHINES.V

anon led Feb No. 657,4I0.

(No Modem Q r J. i

UNITED STATES y PATENT OFFICE.

WALTER GREEN, OF- WILLISTON, SOUTH CAROLINA,`

KNOT-ACTUATED STOP FOR KNllTTlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 657,410, dated September 4, 1900.

Application filed February 27, 1900. Serial No. 6,739y (No modeL) T0 caf/ZZl whom, it may concern: v

Re it known that l, WALTER GREEN, a citizen ot the United States, and a resident of Williston,in the county ofBarnwell and State of South Carolina, have invented certain new and useful Improvements in Knot-Actuated Stops for Knitting-Machines, of which the following is a specification.

This invention relates to means which may be arranged in such relation to a knittingmachine that when a knot, snarl, tangle, or the likepasses from the spool it will engage the device forming the subject-matter of my invention and actuate the same to bring the knitting-machine to a stop before the knot or the like has had an opportunity io reach the needles.

My invention is designed more particularly for attachment to the class of knitting-machines which employ a stop-motion for arl resting the machine when the work advances to a certain stage, my invention being preferably made to actuate said stop-motion as a result of the passage of the knot in the same manner as if the work had proceeded to a point where the machine is arrested in the normal operation.

To these ends my invention consists in a gravitating weight held normally suspended by the engagement of a-lug or projection with a Xed point, a thrust-rod for dislodging the lug or projection to permit the weight to descend, and a suitable fulcrumed lever to which the thrust-rod is attached and which projects into the path of the thread or yarn and constructed at its upper end to offer no obstruction to the passage of the latterin its normal condition, but to be engaged by a knot, so that the lever will be moved by the travel of the knot and the arresting-Weight released for operation upon the stop-motion.

My invention will be fully understood upon reference to the accompanying drawings, in which- Figure 1 is a front view of a common type of circular-knitting machine to which myinvention is applied, and Fig. 2 is a perspective view of my invention detached.

-1 represents a circular-knitting machine which is provided with acommop type of stopmotion which embodies a vertical rod 2, having radial paddles 3, upon which the weight employed for drawing down the thread rests when the work progresses to a certain point in order that the machine may be arrested. For the purposes of my present invention I employ an additional paddle 3fl and mount above the same a weight 4, carried by a snspending-rod 5, which is supported through the medium ot' a lug 6 from a fixed point 7, which may be any suit-able portion of the machine or the table upon which the machine rests.' Extending from the suspending-rod 5 is a thrust-rod 8, engaging the rod 5 through the medium of the eye 9, Fig. 2, so as to permit the rod 5 to drop when the lug is displaced by the thrust-rod 8. Said rod 8 is hinged at 10 to a lever 11, which is fulcrnmed 'at 12 and projects vertically to the path of the thread or yarn 13, where itis provided with a fork 14, through which the thread or yarn will normally travel without interruption. As soon, however, as a knot or tangle or the like appears in the thread or yarn it will be engaged by the fork 14 and in continuing its motion under the feed of the machine will throw the lever 1 1 into the position shown in dotted lines in Fig. 1, which motion will dislodge the lug 6 from the fixed point 7 and permit the weight 4 to drop upon the paddle 3a and stop the machine. The knot is released from the fork 14 by the time the latter reaches the dotted position, and the knot may continue a limited distance until the motion of the machine is arrested. There is ample distance, however, between the actuatingpoint and the point where the machine is arrested to prevent the knot getting into the needles. Hence the object of the invention is fully accomplished, While the feed of the thread is not arrested by the lever 11, which might effect the breaking of the thread. The fork 14 is open at top, so that the relation between it and the thread is restablished the moment the device is set in normal position.

A device such as above described is simple in construction, readily applicable to common forms of knitting-machines without change in the construction of the latter, and is entirely eective in arresting the motioii of the machine when a knot appears. The advantage of such a device is readilyT understood from the fact that knots, tangles, or the like upon reaching the needles cause breakage of the latter,interfere,V with the uniformi-ty l I2. The hereimdeSeribed actuating device the work; and involve the lessi of inlichtixie for top-notis; comprising the grav'itating in restoring the machine to proper condition. Weight, means for suspending, said weight v Having thus described my invention, .the provided with a lug engaging a lfixed point, a 2 5 5 following is what I claim as new therein andl thrust-bar for dislodging said lng` and a lever desire to secure by Letterev Pate-nt: 2 :,eonneeted'with said thrust-bar and -project- 1. In combination withthe-top-inoto'n of r ing into the pathl of tbe thread; substantially aknitting-machine, aswinging lever projectasset forth. Y Y ing into the path of the thread supplied te 3. Stop ffr knitting-machines, eompris- 3o lo said knitting-machine, and constructed to be ingaweight, asn'spending-bar fors-aid Weight engaged by a knot, tangle or the like, occurprovided with a lug for engagement with a ring in said thread, agravitatingmembersus 1| fixed.. point, `a thrust-bar" havin-g sliding conpendeddetachably above thel stop-motion and neetion with said weight transverseto the dropping by gravity upon tle latter when re' line of movement ofl said bar, and the levell 3 5 x5 leased,andathrust-barmovedlongitudinally with which said bar is connected; subst-anby the swinging leverarid engaging the gravitially as set forth. tating member in a direction transverse to it's Y drop', whereby it is dislodged from its' point i of suspension by the movement of said lever' i Witnesse: zo and g'ravtates independent'lyH of the opera-t; W. H. ROUNTREE, ing means; substantially as herein set forth. P. H. LOUD, Jr.

WALTER GREEN. 

